Chuo University , commonly referred to as Chuo (中央) or Chu-Dai (中大), is a private research university in Hachioji, Tokyo, Japan. Founded in 1885 as Igirisu Hōritsu Gakkō, Chuo is one of the oldest and most prestigious institutions in the country. The university operates four campuses in Tokyo: the largest in Hachiōji, one in Bunkyō, and two others in Shinjuku. Chuo is organized into six faculties, ten graduate schools, and nine research institutes. There are also four affiliated high schools and two affiliated junior high schools.

Hachiōji is a city located in the western portion of Tokyo Prefecture, Japan. As of 31 March 2021, the city had an estimated population of 561,344, and a population density of 3,000 persons per km2. The total area of the city is 186.38 km2 (71.96 sq mi).